. >> reporter: vice president joe biden is holed up in a delaware hotel room, engaged in debate prep. while paul ryan got some unexpected debate prep of his own with a reporter from our flint, michigan, affiliate. >> the best thing to help prevent violent crime in the inner cities is to bring opportunities in the inner cities. it's to help people with poverty in the inner cities. to help teach people good discipline, good character. that is civil society. that's what charities and civic groups and churches do, to help one another. make sure they can realize the value of one another? >> and do that by cutting taxes? with a big tax cut? >> those are yours, not mine. >> thank you very much, sir. >> yeah. that was kind of strange. >> reporter: the obama campaign, seeks to mock mitt romney's commitment to eliminate public television. the ad says, quote, mitt romney taking on our enemies, no matter where they nest. george? >> we've not seen the end of that. jake, thank you very much. the v.p. candidates joe biden and paul ryan go at it this thursday, at 9:00 eastern, 6:00 pacific. >>> let's